The Dramm FM50 Air Powered Foamer Runs Off Shop Air, Not a Pump
The FM50 is a cart-mounted foaming machine, a 50-gallon plastic tank on a vinyl-dipped frame, with a foam gun on the hose. Compressed air does the mixing, not a pump. Feed it 60 PSI at 5 CFM and it throws a shaving-cream lather up to 15 feet. That reach covers a bay of polycarbonate wall from the aisle, without dragging the cart down every row. Solid rubber wheels and casters roll it over wet concrete without going flat. At 50 in. x 27 in. x 50 in. it clears a standard door, though not a narrow bench row.
Hose Length Decides What a Compressed Air Foamer Can Reach
The hose is not just a longer cord. Dramm steps the bore up with the run: 1/2 in. at 25 ft, 5/8 in. at 50 ft, 3/4 in. at 75 ft. A narrower hose bleeds pressure over distance, and the foam goes wet and thin when it does. EPDM rubber handles the harsh detergents and corrosive sanitizers that eat vinyl lines. The 75 ft run draws more air than the shorter two, so a small pancake compressor will stall it. Most crews foam between crops, benches and trays first, then walls, then floors, and let the lather sit while the room drains.
Key Features
- 50-Gallon Chemical-Resistant Tank: Holds enough mixed sanitizer to work a full greenhouse bay without stopping to refill.
- Air-Driven Operation: No motor and no power cord, which keeps electrical gear out of a wet washdown.
- 15-Foot Foam Throw: Reaches gutter height and upper wall panels from ground level, so overhead surfaces need no ladder.
- Three Hose Lengths: 25, 50 and 75 ft options match the run to the room instead of leaving coiled slack underfoot.
- EPDM Rubber Hose: Stands up to the peroxide sanitizers and alkaline detergents that soften lighter PVC line.
- Solid Rubber Wheels and Casters: Roll over wet concrete and drain grates, and they never go flat mid-washdown.
- Vinyl-Dipped Cart Frame: Resists the corrosive splash-back that rusts bare steel frames in greenhouse sanitation work.
Technical Specifications
| Specification | Value |
|---|---|
| Model | FM50-25 / FM50-50 / FM50-75 |
| Tank Capacity | 50 gal (189 L) |
| Power Supply | Air driven, no electrical connection |
| Air Requirement | 60 PSI @ 5 CFM (25 ft hose) |
| Hose Lengths | 25 ft, 50 ft, 75 ft |
| Hose Diameter | 1/2 in. (25 ft), 5/8 in. (50 ft), 3/4 in. (75 ft) |
| Hose Material | EPDM rubber |
| Foam Throw | Up to 15 ft |
| Wheels | Solid rubber wheels and casters |
| Frame | Vinyl-dipped cart |
| Dimensions | 50 in. x 27 in. x 50 in. |